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inj11 avatar Ubuntu

Using MergerFS with disks that are already RAID?

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inj11

Recently I decided to update my home server and to add more storage. Previously I had 2 drives set up with MDADM to be RAID1, and that RAID was mounted to my share folder for samba. Now that I'm adding two more drives, I created another RAID with those two, but I don't think I'm able to mount two RAIDs to one singular folder for easy sharing without something like MergerFS to create one logical storage device. I've been trying to follow this tutorial:

https://www.linuxserver.io/blog/2017-06-24-the-perfect-media-server-2017

But I'm confused. I may be misunderstanding it, but it seems like MergerFS itself can handle RAID systems? Does this mean that I should destroy my RAID arrays and start over with only MergerFS and not MDADM? Is it possible to treat the two RAID systems as drives for MergerFS? The tutorial uses the device ID to mount the drives, and the RAID system doesn't have its own device ID, but if it's supposed to automatically clone the drives, can I just add one of the devices to MergerFS and have MDADM automatically clone them when I access the one? Or will that not work?

I'm pretty new to this and I'm not sure if having two RAIDs is even what I want. Am I doing this the right way? Does anyone have any suggestions?

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